Cal 28 vs Sirius 28
How do the Cal 28 and Sirius 28 compare? Below, their dimensions, displacement, sail area and the standard design ratios side by side, followed by a data-driven summary.
Cal 28 
Sirius 28 | Cal 28 | Sirius 28 | |
|---|---|---|
| Length overall | 28.0 ft8.53 m | 28.0 ft8.53 m |
| Waterline length | 22.5 ft6.86 m | 24.0 ft7.32 m |
| Beam | 9.0 ft2.74 m | 9.7 ft2.95 m |
| Draft | 4.5 ft1.37 m | 4.3 ft1.31 m |
| Displacement | 6,000 lb2,722 kg | 6,700 lb3,039 kg |
| Ballast | 2,200 lb998 kg | 2,600 lb1,179 kg |
| Sail area | 352 ft²32.7 m² | 379 ft²35.2 m² |
| SA / Displacement | 17.06 | 17.06 |
| Displacement / Length | 235 | 216 |
| Comfort ratio | 20.6 | 20.0 |
| Capsize screening | 1.98 | 2.05 |
| Hull speed (kn) | 6.4 | 6.6 |
Cal 28 vs Sirius 28: the short version
- The Cal 28 and Sirius 28 are close in length (28.0 ft8.53 m vs 28.0 ft8.53 m ).
- The Sirius 28 is heavier, displacing about 12% more, which usually means a steadier but slower-to-accelerate hull.
- On sail area/displacement the Sirius 28 carries the more powerful rig (17.1 vs 17.1), favouring lighter-air performance.
- The Cal 28 scores higher on the Brewer comfort ratio, suggesting an easier motion in a seaway.
- By the capsize screening formula the Cal 28 rates better for offshore work (1.98 vs 2.05).
Ratios are guidelines computed from published specs; condition, layout and gear matter as much as the numbers.